{"id":"CVE-2026-120474","aliases":["AZL-113242","CLSA-2026-1794048687","DEBIAN-CVE-2026-120474","EUVD-2026-118178","GHSA-7xg3-fphp-28hg","UBUNTU-CVE-2026-120474"],"status":"published","title":"undici vulnerable to cross-user cache disclosure via same-origin redirect","description":"undici is an HTTP client for Node.js. In versions 7.0.0 through 7.30.1 and 8.0.0 through 8.12.3, when the redirect interceptor and a shared response cache are used together, an authenticated request that is redirected to a same-origin target has the final response stored under the original request's cache key. That key omits the credential and carries no Vary header, so a later anonymous or different user can be served the first user's private response body. This results in cross-user disclosure of cached private responses. The issue is fixed in undici 7.30.2 and 8.12.4, and users should upgrade to one of those versions or later.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00288,"percentile":0.21577,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-524","CWE-639"],"published":"2026-11-06T00:00:00Z","modified":"2026-11-11T14:17:32Z","affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"nodejs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"24.22.1-1"}]}]},{"source":"osv","ecosystem":"TuxCare:npm","package":"undici","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"7.29.1-tuxcare.0"},{"fixed":"7.29.1-tuxcare.3"}]}],"versions":["7.29.1","7.29.1-tuxcare.1","7.29.1-tuxcare.2"],"bundled":2},{"source":"osv","ecosystem":"Debian:12","package":"node-undici","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.15.0+dfsg1+~cs20.10.9.3-1","5.15.0+dfsg1+~cs20.10.9.3-1+deb12u1","5.15.0+dfsg1+~cs20.10.9.3-1+deb12u2","5.15.0+dfsg1+~cs20.10.9.3-1+deb12u3","5.15.0+dfsg1+~cs20.10.9.3-1+deb12u4","5.19.1+dfsg1+~cs20.10.9.5-1","5.19.1+dfsg1+~cs20.10.9.5-2","5.22.1+dfsg1+~cs20.10.10.2-1","5.26.3+dfsg1+~cs23.10.12-1","5.26.3+dfsg1+~cs23.10.12-2","5.26.3+dfsg1+~cs23.10.12-3","5.28.0+dfsg1+~cs23.11.12.3-1","5.28.0+dfsg1+~cs23.11.12.3-2","5.28.2+dfsg1+~cs23.11.12.3-1","5.28.2+dfsg1+~cs23.11.12.3-2","5.28.2+dfsg1+~cs23.11.12.3-3","5.28.2+dfsg1+~cs23.11.12.3-4","5.28.2+dfsg1+~cs23.11.12.3-5","5.28.2+dfsg1+~cs23.11.12.3-6","5.28.4+dfsg1+~cs23.12.11-1","5.28.4+dfsg1+~cs23.12.11-2","7.1.0+dfsg1+~cs24.12.10-1","7.15.0+dfsg+~cs3.2.0-1","7.15.0+dfsg+~cs3.2.0-3","7.16.0+dfsg+~cs3.2.0-1","7.16.0+dfsg+~cs3.2.0-2","7.18.2+dfsg+~cs3.2.0-1","7.2.3+dfsg1+~cs24.12.11-1","7.2.3+dfsg1+~cs24.12.11-2","7.24.5+dfsg+~cs3.2.0-1","7.24.6+dfsg+~cs3.2.0-1","7.24.6+dfsg+~cs3.2.0-2","7.24.6+dfsg+~cs3.2.0-3","7.3.0+dfsg1+~cs24.12.11-1","7.3.0+dfsg1+~cs24.12.11-2","8.10.2+dfsg+~cs3.2.2-1","8.12.1+dfsg+~cs3.2.3-1","8.12.2+dfsg+~cs3.2.3-1","8.12.2+dfsg+~cs3.2.3-2","8.12.4+dfsg+~cs3.2.5-1","8.5.0+dfsg+~cs3.2.0-1","8.5.0+dfsg+~cs3.2.0-2","8.5.0+dfsg+~cs3.2.0-3","8.9.0+dfsg+~cs3.2.0-1"]},{"source":"osv","ecosystem":"Debian:13","package":"node-undici","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.15.0+dfsg+~cs3.2.0-1","7.15.0+dfsg+~cs3.2.0-3","7.16.0+dfsg+~cs3.2.0-1","7.16.0+dfsg+~cs3.2.0-2","7.18.2+dfsg+~cs3.2.0-1","7.24.5+dfsg+~cs3.2.0-1","7.24.6+dfsg+~cs3.2.0-1","7.24.6+dfsg+~cs3.2.0-2","7.24.6+dfsg+~cs3.2.0-3","7.3.0+dfsg1+~cs24.12.11-1","7.3.0+dfsg1+~cs24.12.11-2","8.10.2+dfsg+~cs3.2.2-1","8.12.1+dfsg+~cs3.2.3-1","8.12.2+dfsg+~cs3.2.3-1","8.12.2+dfsg+~cs3.2.3-2","8.12.4+dfsg+~cs3.2.5-1","8.5.0+dfsg+~cs3.2.0-1","8.5.0+dfsg+~cs3.2.0-2","8.5.0+dfsg+~cs3.2.0-3","8.9.0+dfsg+~cs3.2.0-1"]},{"source":"osv","ecosystem":"Debian:14","package":"node-undici","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.15.0+dfsg+~cs3.2.0-1","7.15.0+dfsg+~cs3.2.0-3","7.16.0+dfsg+~cs3.2.0-1","7.16.0+dfsg+~cs3.2.0-2","7.18.2+dfsg+~cs3.2.0-1","7.24.5+dfsg+~cs3.2.0-1","7.24.6+dfsg+~cs3.2.0-1","7.24.6+dfsg+~cs3.2.0-2","7.24.6+dfsg+~cs3.2.0-3","7.3.0+dfsg1+~cs24.12.11-1","7.3.0+dfsg1+~cs24.12.11-2","8.10.2+dfsg+~cs3.2.2-1","8.12.1+dfsg+~cs3.2.3-1","8.12.2+dfsg+~cs3.2.3-1","8.12.2+dfsg+~cs3.2.3-2","8.12.4+dfsg+~cs3.2.5-1","8.5.0+dfsg+~cs3.2.0-1","8.5.0+dfsg+~cs3.2.0-2","8.5.0+dfsg+~cs3.2.0-3","8.9.0+dfsg+~cs3.2.0-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"node-undici","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.22.1+dfsg1+~cs20.10.10.2-1ubuntu1","5.26.3+dfsg1+~cs23.10.12-2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"node-undici","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.18.2+dfsg+~cs3.2.0-1build1","7.24.6+dfsg+~cs3.2.0-3","8.5.0+dfsg+~cs3.2.0-2","8.5.0+dfsg+~cs3.2.0-3","8.9.0+dfsg+~cs3.2.0-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"node-undici","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.3.0+dfsg1+~cs24.12.11-2","7.16.0+dfsg+~cs3.2.0-2","7.18.2+dfsg+~cs3.2.0-1","7.18.2+dfsg+~cs3.2.0-1build1"]}],"products":[{"vendor":"undici","product":"undici"}],"references":[{"url":"https://github.com/nodejs/undici/security/advisories/GHSA-7xg3-fphp-28hg","tags":["advisory","report"]},{"url":"https://cna.openjsf.org/security-advisories.html","tags":["advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-120474","tags":["web","advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/120xxx/CVE-2026-120474.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-120474","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-120474","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-120474","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-120474","title":"undici vulnerable to cross-user cache disclosure via same-origin redirect","description":"undici is an HTTP client for Node.js. In versions 7.0.0 through 7.30.1 and 8.0.0 through 8.12.3, when the redirect interceptor and a shared response cache are used together, an authenticated request that is redirected to a same-origin target has the final response stored under the original request's cache key. That key omits the credential and carries no Vary header, so a later anonymous or different user can be served the first user's private response body. This results in cross-user disclosure of cached private responses. The issue is fixed in undici 7.30.2 and 8.12.4, and users should upgrade to one of those versions or later.","status":"published","published":"2026-11-06T09:57:46.664Z","modified":"2026-11-10T17:46:05.157Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-524","CWE-639"],"updated_at":"2026-11-10T18:39:46.830944Z"}],"euvd":[{"id":"EUVD-2026-118178","description":"undici is an HTTP client for Node.js. In versions 7.0.0 through 7.30.1 and 8.0.0 through 8.12.3, when the redirect interceptor and a shared response cache are used together, an authenticated request that is redirected to a same-origin target has the final response stored under the original request's cache key. That key omits the credential and carries no Vary header, so a later anonymous or different user can be served the first user's private response body. This results in cross-user disclosure of cached private responses. The issue is fixed in undici 7.30.2 and 8.12.4, and users should upgrade to one of those versions or later.","status":"published","published":"2026-11-06T09:57:46Z","modified":"2026-11-10T17:46:05Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","level":"medium"}],"updated_at":"2026-11-10T19:22:12.693108Z"}],"nvd":[{"id":"CVE-2026-120474","description":"undici is an HTTP client for Node.js. In versions 7.0.0 through 7.30.1 and 8.0.0 through 8.12.3, when the redirect interceptor and a shared response cache are used together, an authenticated request that is redirected to a same-origin target has the final response stored under the original request's cache key. That key omits the credential and carries no Vary header, so a later anonymous or different user can be served the first user's private response body. This results in cross-user disclosure of cached private responses. The issue is fixed in undici 7.30.2 and 8.12.4, and users should upgrade to one of those versions or later.","status":"published","published":"2026-11-06T10:16:36.913Z","modified":"2026-11-10T18:17:19.987Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-524","CWE-639"],"updated_at":"2026-11-06T22:02:17.053381Z"}],"osv":[{"id":"CVE-2026-120474","title":"undici vulnerable to cross-user cache disclosure via same-origin redirect","description":"undici is an HTTP client for Node.js. In versions 7.0.0 through 7.30.1 and 8.0.0 through 8.12.3, when the redirect interceptor and a shared response cache are used together, an authenticated request that is redirected to a same-origin target has the final response stored under the original request's cache key. That key omits the credential and carries no Vary header, so a later anonymous or different user can be served the first user's private response body. This results in cross-user disclosure of cached private responses. The issue is fixed in undici 7.30.2 and 8.12.4, and users should upgrade to one of those versions or later.","status":"published","published":"2026-11-06T09:57:46.664Z","modified":"2026-11-12T02:30:57.655835652Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","level":"medium"}],"cwes":["CWE-524","CWE-639"],"updated_at":"2026-11-07T03:08:01.726202Z"},{"id":"DEBIAN-CVE-2026-120474","description":"undici is an HTTP client for Node.js. In versions 7.0.0 through 7.30.1 and 8.0.0 through 8.12.3, when the redirect interceptor and a shared response cache are used together, an authenticated request that is redirected to a same-origin target has the final response stored under the original request's cache key. That key omits the credential and carries no Vary header, so a later anonymous or different user can be served the first user's private response body. This results in cross-user disclosure of cached private responses. The issue is fixed in undici 7.30.2 and 8.12.4, and users should upgrade to one of those versions or later.","status":"published","published":"2026-11-06T10:16:36.913Z","modified":"2026-11-11T10:00:51.261981403Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","level":"medium"}],"updated_at":"2026-11-11T10:35:16.464644Z"},{"id":"UBUNTU-CVE-2026-120474","description":"undici is an HTTP client for Node.js. In versions 7.0.0 through 7.30.1 and 8.0.0 through 8.12.3, when the redirect interceptor and a shared response cache are used together, an authenticated request that is redirected to a same-origin target has the final response stored under the original request's cache key. That key omits the credential and carries no Vary header, so a later anonymous or different user can be served the first user's private response body. This results in cross-user disclosure of cached private responses. The issue is fixed in undici 7.30.2 and 8.12.4, and users should upgrade to one of those versions or later.","status":"published","published":"2026-11-06T00:00:00Z","modified":"2026-11-07T01:46:06.380765665Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","level":"medium"}],"updated_at":"2026-11-07T01:57:06.567161Z"},{"id":"AZL-113242","title":"CVE-2026-120474 affecting package nodejs 24.22.1-1","description":"undici is an HTTP client for Node.js. In versions 7.0.0 through 7.30.1 and 8.0.0 through 8.12.3, when the redirect interceptor and a shared response cache are used together, an authenticated request that is redirected to a same-origin target has the final response stored under the original request's cache key. That key omits the credential and carries no Vary header, so a later anonymous or different user can be served the first user's private response body. This results in cross-user disclosure of cached private responses. The issue is fixed in undici 7.30.2 and 8.12.4, and users should upgrade to one of those versions or later.","status":"published","published":"2026-11-06T10:16:36Z","modified":"2026-11-11T14:17:32.800377428Z","updated_at":"2026-11-11T14:42:54.020399Z"},{"id":"CLSA-2026-1794048687","title":"TuxCare security update for undici (2 CVEs)","description":"TuxCare rebuilt undici to address 2 CVEs. Fixed in 7.29.1-tuxcare.3.","status":"published","published":"2026-11-07T11:51:28Z","modified":"2026-11-07T13:15:02.336842373Z","updated_at":"2026-11-07T13:47:00.167603Z"}]}}